Waltham, MA 02453 Hourly Weather

Middlesex County5:41 PM EDT42.37°N, 71.23°W

Next 48 hours

5 PM 8 PM 11 PM Thu Oct 22 2 AM 5 AM 8 AM 11 AM 2 PM 5 PM 8 PM 11 PM Fri Oct 23 2 AM 5 AM 8 AM 11 AM 2 PM 30° 35° 40° 45° 50° 55° 60° %
TemperatureFeels likeChance of precipitationNight
Wednesday, October 217 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
5 PM Mostly Cloudy 53° 53° 0% 0.00 in NE 9 G20 61% 40° 73% 0
6 PM Mostly Cloudy 52° 52° 0% 0.00 in NE 8 G18 63% 40° 72% 0
7 PM Mostly Cloudy 51° 51° 0% 0.00 in NE 7 G17 68% 41° 73% 0
8 PM Mostly Cloudy 47° 44° 1% 0.00 in NE 7 G16 79% 41° 74% 0
9 PM Mostly Cloudy 46° 42° 1% 0.00 in NE 7 G16 83% 41° 74% 0
10 PM Mostly Cloudy 46° 42° 1% 0.00 in N 7 G15 86% 42° 68% 0
11 PM Mostly Cloudy 46° 42° 2% 0.00 in N 7 G14 86% 42° 74% 0
Thursday, October 2224 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Cloudy 45° 41° 2% 0.00 in N 7 G15 86% 41° 73% 0
1 AM Mostly Cloudy 45° 41° 2% 0.00 in N 7 G15 86% 41° 73% 0
2 AM Mostly Cloudy 44° 39° 2% 0.00 in N 8 G18 89% 41° 76% 0
3 AM Mostly Cloudy 44° 39° 1% 0.00 in N 8 G20 86% 40° 75% 0
4 AM Mostly Cloudy 44° 39° 1% 0.00 in N 8 G20 86% 40° 70% 0
5 AM Mostly Cloudy 42° 37° 1% 0.00 in N 8 G21 86% 38° 71% 0
6 AM Mostly Cloudy 42° 37° 1% 0.00 in N 8 G21 82% 37° 73% 0
7 AM Partly Sunny 41° 36° 0% 0.00 in N 8 G21 85% 37° 69% 0
8 AM Partly Sunny 42° 36° 0% 0.00 in N 9 G21 82% 37° 57% 0
9 AM Partly Sunny 45° 40° 0% 0.00 in N 9 G22 76% 38° 51% 1
10 AM Sunny 48° 44° 0% 0.00 in N 9 G23 68% 38° 20% 2
11 AM Sunny 52° 52° 0% 0.00 in N 8 G24 59% 38° 21% 3
12 PM Sunny 55° 55° 0% 0.00 in N 12 G24 53% 38° 17% 4
1 PM Sunny 58° 58° 0% 0.00 in N 12 G24 40% 34° 13% 3
2 PM Sunny 59° 59° 0% 0.00 in N 12 G23 36% 32° 9% 3
3 PM Sunny 60° 60° 0% 0.00 in N 10 G22 36% 33° 8% 2
4 PM Sunny 60° 60° 0% 0.00 in N 9 G20 39% 35° 7% 1
5 PM Sunny 59° 59° 0% 0.00 in N 9 G18 44% 37° 6% 0
6 PM Mostly Clear 57° 57° 0% 0.00 in N 10 G20 49% 38° 12% 0
7 PM Mostly Clear 55° 55° 0% 0.00 in N 12 G22 55% 39° 19% 0
8 PM Mostly Clear 53° 53° 0% 0.00 in N 13 G23 59% 39° 25% 0
9 PM Mostly Clear 51° 51° 0% 0.00 in N 13 G22 63% 39° 17% 0
10 PM Clear 49° 44° 0% 0.00 in N 13 G20 66% 38° 5% 0
11 PM Clear 48° 43° 0% 0.00 in N 12 G18 65% 37° 1% 0
Friday, October 2324 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 46° 41° 0% 0.00 in N 12 G18 68% 36° 9% 0
1 AM Clear 45° 40° 0% 0.00 in N 10 G17 65% 34° 4% 0
2 AM Clear 43° 37° 0% 0.00 in N 10 G17 67% 33° 1% 0
3 AM Clear 41° 35° 0% 0.00 in N 10 G16 70% 32° 2% 0
4 AM Clear 40° 34° 0% 0.00 in N 9 G16 70% 31° 2% 0
5 AM Clear 39° 33° 0% 0.00 in N 9 G16 70% 30° 3% 0
6 AM Sunny 37° 30° 0% 0.00 in N 9 G15 75% 30° 2% 0
7 AM Patchy Frost 36° 29° 0% 0.00 in N 9 G15 75% 29° 1% 0
8 AM Sunny 37° 30° 0% 0.00 in N 9 G16 72% 29° 1% 0
9 AM Sunny 41° 36° 0% 0.00 in N 7 G14 76% 34° 0% 1
10 AM Sunny 45° 40° 0% 0.00 in N 8 G15 65% 34° 2% 2
11 AM Sunny 48° 44° 0% 0.00 in N 8 G16 56% 33° 3% 3
12 PM Sunny 51° 47° 0% 0.00 in N 8 G16 49% 32° 4% 3
1 PM Sunny 52° 52° 0% 0.00 in N 8 G15 45% 31° 4% 3
2 PM Sunny 53° 53° 0% 0.00 in N 7 G13 42% 31° 5% 2
3 PM Sunny 54° 54° 0% 0.00 in N 6 42% 31° 4% 1
4 PM Sunny 54° 54° 0% 0.00 in N 5 43% 32° 2% 1
5 PM Sunny 52° 52° 0% 0.00 in N 3 47% 33° 1% 0
6 PM Clear 50° 50° 0% 0.00 in N 2 55% 34° 2% 0
7 PM Clear 46° 46° 0% 0.00 in NE 1 65% 35° 2% 0
8 PM Clear 43° 43° 0% 0.00 in NE 1 76% 36° 3% 0
9 PM Clear 41° 41° 0% 0.00 in N 1 81% 36° 3% 0
10 PM Clear 39° 39° 0% 0.00 in N 2 84% 35° 4% 0
11 PM Clear 38° 38° 0% 0.00 in N 2 85% 34° 4% 0
Saturday, October 2424 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Clear 37° 37° 0% 0.00 in N 2 90% 34° 4% 0
1 AM Clear 35° 35° 0% 0.00 in NW 2 94% 34° 4% 0
2 AM Clear 35° 35° 0% 0.00 in NW 2 98% 34° 4% 0
3 AM Mostly Clear 34° 34° 0% 0.00 in NW 2 99% 34° 6% 0
4 AM Mostly Clear 33° 33° 0% 0.00 in NW 2 99% 33° 7% 0
5 AM Mostly Clear 33° 33° 0% 0.00 in NW 2 99% 33° 9% 0
6 AM Sunny 33° 33° 0% 0.00 in NW 2 100% 33° 10% 0
7 AM Sunny 32° 32° 0% 0.00 in NW 2 100% 32° 11% 0
8 AM Sunny 34° 34° 0% 0.00 in NW 2 97% 33° 12% 0
9 AM Sunny 38° 38° 0% 0.00 in NW 2 84% 34° 11% –
10 AM Sunny 44° 44° 0% 0.00 in W 2 70% 34° 10% –
11 AM Sunny 49° 49° 0% 0.00 in W 2 58% 35° 9% –
12 PM Sunny 53° 53° 0% 0.00 in W 2 50% 35° 9% –
1 PM Sunny 55° 55° 0% 0.00 in W 3 45% 34° 9% –
2 PM Sunny 57° 57° 0% 0.00 in W 3 42% 34° 9% –
3 PM Sunny 58° 58° 0% 0.00 in W 2 42% 35° 6% –
4 PM Sunny 58° 58° 0% 0.00 in W 2 45% 37° 4% –
5 PM Sunny 57° 57° 0% 0.00 in W 1 50% 38° 1% –
6 PM Clear 54° 54° 0% 0.00 in SW 1 56% 39° 2% –
7 PM Clear 51° 51° 0% 0.00 in SW 2 64% 39° 2% –
8 PM Clear 47° 47° 0% 0.00 in SW 2 74% 39° 3% –
9 PM Clear 44° 44° 0% 0.00 in SW 2 80% 39° 3% –
10 PM Clear 42° 42° 0% 0.00 in SW 2 87% 38° 3% –
11 PM Clear 40° 40° 0% 0.00 in SW 2 92% 38° 3% –
Sunday, October 2524 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Clear 39° 39° 0% 0.00 in SW 2 96% 38° 3% –
1 AM Clear 38° 38° 0% 0.00 in W 2 99% 37° 3% –
2 AM Clear 37° 37° 0% 0.00 in W 2 100% 37° 3% –
3 AM Clear 36° 36° 0% 0.00 in W 2 100% 36° 3% –
4 AM Clear 35° 35° 0% 0.00 in W 2 100% 35° 3% –
5 AM Clear 35° 35° 0% 0.00 in W 2 100% 35° 3% –
6 AM Sunny 34° 34° 0% 0.00 in W 2 100% 34° 3% –
7 AM Sunny 33° 33° 0% 0.00 in W 2 100% 33° 3% –
8 AM Sunny 35° 35° 0% 0.00 in W 2 100% 35° 2% –
9 AM Sunny 40° 40° 0% 0.00 in W 2 86% 37° 2% –
10 AM Sunny 48° 48° 0% 0.00 in W 2 71% 39° 2% –
11 AM Sunny 54° 54° 0% 0.00 in SW 2 59% 40° 2% –
12 PM Sunny 58° 58° 0% 0.00 in SW 3 51% 40° 2% –
1 PM Sunny 61° 61° 0% 0.00 in SW 3 45% 39° 2% –
2 PM Sunny 62° 62° 0% 0.00 in SW 5 43% 39° 4% –
3 PM Sunny 63° 63° 0% 0.00 in SW 5 43% 40° 4% –
4 PM Sunny 63° 63° 0% 0.00 in SW 3 45% 42° 4% –
5 PM Sunny 62° 62° 0% 0.00 in SW 3 50% 43° 4% –
6 PM Clear 59° 59° 0% 0.00 in SW 3 55% 43° 4% –
7 PM Clear 56° 56° 0% 0.00 in SW 3 63% 43° 4% –
8 PM Mostly Clear 52° 52° 0% 0.00 in SW 3 71% 43° 6% –
9 PM Mostly Clear 49° 48° 0% 0.00 in SW 3 78% 43° 6% –
10 PM Mostly Clear 47° 46° 0% 0.00 in SW 3 84% 42° 6% –
11 PM Mostly Clear 45° 44° 0% 0.00 in SW 3 89% 42° 6% –
Monday, October 2624 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 44° 42° 0% 0.00 in SW 3 93% 42° 6% –
1 AM Mostly Clear 43° 41° 0% 0.00 in SW 3 95% 41° 6% –
2 AM Mostly Clear 42° 40° 0% 0.00 in SW 3 96% 41° 8% –
3 AM Mostly Clear 41° 39° 0% 0.00 in SW 3 98% 41° 8% –
4 AM Mostly Clear 40° 38° 0% 0.00 in SW 3 99% 40° 8% –
5 AM Mostly Clear 40° 38° 0% 0.00 in SW 3 100% 40° 8% –
6 AM Sunny 39° 37° 0% 0.00 in SW 3 100% 39° 8% –
7 AM Sunny 39° 36° 0% 0.00 in W 3 G8 100% 39° 8% –
8 AM Sunny 40° 38° 0% 0.00 in W 3 G8 100% 40° 14% –
9 AM Sunny 45° 43° 0% 0.00 in W 3 G8 88% 41° 14% –
10 AM Sunny 51° 51° 0% 0.00 in W 3 74% 43° 14% –
11 AM Sunny 57° 57° 0% 0.00 in W 3 64% 45° 14% –
12 PM Sunny 61° 61° 0% 0.00 in W 3 58% 46° 14% –
1 PM Sunny 63° 63° 0% 0.00 in W 5 54% 46° 14% –
2 PM Sunny 65° 65° 0% 0.00 in W 5 52% 47° 12% –
3 PM Sunny 66° 66° 0% 0.00 in W 3 52% 48° 12% –
4 PM Sunny 66° 66° 0% 0.00 in W 3 55% 49° 12% –
5 PM Sunny 65° 65° 0% 0.00 in W 2 58% 50° 12% –
6 PM Mostly Clear 63° 63° 0% 0.00 in W 2 63% 50° 12% –
7 PM Mostly Clear 60° 60° 0% 0.00 in W 3 68% 50° 12% –
8 PM Mostly Clear 57° 57° 0% 0.00 in W 3 75% 49° 16% –
9 PM Mostly Clear 54° 54° 0% 0.00 in NW 3 80% 48° 16% –
10 PM Mostly Clear 52° 52° 0% 0.00 in NW 2 85% 48° 16% –
11 PM Mostly Clear 50° 50° 0% 0.00 in NW 2 89% 47° 16% –
Tuesday, October 2724 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 49° 49° 0% 0.00 in NW 2 92% 47° 16% –
1 AM Mostly Clear 48° 48° 0% 0.00 in NW 3 92% 46° 16% –
2 AM Partly Cloudy 48° 47° 2% 0.00 in NW 3 93% 46° 29% –
3 AM Partly Cloudy 47° 45° 2% 0.00 in N 3 G8 94% 45° 29% –
4 AM Partly Cloudy 46° 44° 2% 0.00 in N 5 95% 45° 29% –
5 AM Partly Cloudy 45° 43° 2% 0.00 in N 5 96% 44° 29% –
6 AM Mostly Sunny 44° 42° 2% 0.00 in N 5 G10 98% 44° 29% –
7 AM Mostly Sunny 44° 41° 2% 0.00 in N 6 99% 44° 29% –
8 AM Mostly Sunny 45° 42° 2% 0.00 in N 6 G12 96% 44° 35% –
9 AM Mostly Sunny 47° 44° 2% 0.00 in N 6 G12 88% 44° 35% –
10 AM Mostly Sunny 50° 48° 2% 0.00 in N 7 G13 79% 44° 35% –
11 AM Mostly Sunny 53° 53° 2% 0.00 in N 7 G13 71% 44° 35% –
12 PM Mostly Sunny 55° 55° 2% 0.00 in NE 7 G13 67% 44° 35% –
1 PM Mostly Sunny 56° 56° 2% 0.00 in NE 7 G13 64% 43° 35% –
2 PM Sunny 56° 56° 1% 0.00 in NE 7 G13 62% 43° 25% –
3 PM Sunny 57° 57° 1% 0.00 in NE 7 58% 42° 25% –
4 PM Sunny 57° 57° 1% 0.00 in E 7 56% 41° 25% –
5 PM Sunny 56° 56° 1% 0.00 in E 6 57% 41° 25% –
6 PM Mostly Clear 54° 54° 1% 0.00 in E 5 62% 42° 25% –
7 PM Mostly Clear 52° 52° 1% 0.00 in E 3 71% 42° 25% –
8 PM Partly Cloudy 49° 49° 0% 0.00 in E 2 80% 43° 30% –
9 PM Partly Cloudy 47° 47° 0% 0.00 in E 2 85% 43° 30% –
10 PM Partly Cloudy 45° 45° 0% 0.00 in NE 2 90% 42° 30% –
11 PM Partly Cloudy 43° 43° 0% 0.00 in NE 2 93% 41° 30% –
Wednesday, October 284 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Partly Cloudy 42° 42° 0% 0.00 in NE 2 95% 41° 30% –
1 AM Partly Cloudy 41° 41° 0% 0.00 in N 2 96% 40° 30% –
2 AM Partly Cloudy 41° 41° 2% 0.00 in N 2 96% 40° 34% –
3 AM Partly Cloudy 40° 40° 2% 0.00 in N 2 96% 39° 34% –

National Weather Service forecast updated 3 hrs ago. Precipitation amounts are the forecast liquid equivalent for each hour.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.